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Germination, Growth, and Ecology of Sicklepod

  • J. M. Creel (a1), C. S. Hoveland (a2) and G. A. Buchanan (a2)

Abstract

Germination, growth, and potential phytotoxicity of sicklepod (Cassia obtusifolia L.) were studied. Seed germination occurred in the temperature range from 18 to 36 C, but rapid seedling growth occurred only between 30 and 36 C. Seed dormancy caused by a waxy coat resulted in only 15% germination in soil over a 12-month period. A 1:15 (g/ml) water extract of sicklepod tops inhibited germination of cotton (Gossypium hirsutum L.) and oat (Avena sativa L.) seed. Incorporation of sicklepod residues in soil reduced germination of cotton seed but increased persistence of sericea (Lespedeza cuneata (Dumont) G. Don.) and crimson clover (Trifolium incarnatum L.) because damping-off was almost eliminated. There was evidence in nutrient cultures that sicklepod released a phytotoxic residue from its roots, reducing growth of cotton but having no effect on soybeans (Glycine max (L.) Merr.). Sicklepod grew well in soils ranging from pH 3.2 to 7.9. Sicklepod response to N, P, and K levels was similar to cotton and higher than that of soybeans.

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1. Bonner, J. and Galston, A. W. 1945. Toxic substances from the culture media of guayule which may inhibit growth. Bot. Gaz. 106:185196.
2. Chaven, A. B. and Trivedi, P. N. 1962. Seed germination in some weeds. Indian Forester. 88:436439.
3. Gray, R. and Bonner, J. 1948. Structure determination and synthesis of a plant growth inhibitor 3-acetyl-6-methoxy-benzal-dehyde, found in the leaves of Encilia farinosa . Amer. Chem. Soc. 70:12491253.
4. Gressel, J. B. and Holm, L. G. 1964. Chemical inhibition of crop germination by weed seeds and the nature of inhibition by Abutilon theophrasti . Weed Res. 4:4453.
5. Hunter, J. R. and Erickson, A. E. 1952. Relation of seed germination to soil moisture tension. Agron. J. 44:107109.
6. LeTourneau, D., Failer, G. S., and Heggeness, H. G. 1956. The effect of aqueous extracts of plant tissue on germination and seedling development of certain crop plants. Weeds 4:363368.
7. Stout, M. and Tolman, B. 1941. Factors affecting the germination of sugar beet and other seed with special reference to the toxic effects of ammonia. J. Agr. Res. 65:687713.
8. Warren, K. S. 1962. Ammonia toxicity and pH. Nature 195:4749.

Germination, Growth, and Ecology of Sicklepod

  • J. M. Creel (a1), C. S. Hoveland (a2) and G. A. Buchanan (a2)

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